Osa Weather (Next 3 days): The snow forecast for Osa is: Heavy rain (total 22.0mm), heaviest during Wed afternoon. Mild temperatures (max 8°C on Wed night, min 1°C on Thu night). Winds increasing (calm on Tue night, fresh winds from the SW by Wed afternoon).
Osa Weather (Days 4-6): Mostly dry. Freeze-thaw conditions (max 12°C on Sun morning, min 0°C on Fri night). Wind will be generally light.
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 5 |  | ||||
| Bottom Lift: | 4 | |
Wednesday 18 | Thursday 19 | Friday 20 | Saturday 21 | Sunday 22 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
|  |  |  | | | |  |  |  | | | |  | | | |
some clouds | light rain | mod. rain | mod. rain | light rain | light rain | some clouds | cloudy | clear | clear | clear | clear | clear | some clouds | some clouds | some clouds | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | 3 | 7 | 9 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | |
max °C | 4 | 6 | 7 | 8 | 6 | 7 | 4 | 6 | 6 | 1 | 10 | 9 | 3 | 12 | 11 | 5 |
min °C | 4 | 5 | 6 | 5 | 5 | 4 | 1 | 4 | 3 | 0 | 7 | 5 | 2 | 8 | 7 | 4 |
4 | 0 | 2 | 1 | 2 | 1 | -4 | 1 | 0 | -2 | 6 | 5 | -1 | 6 | 5 | 1 | |
59 | 84 | 98 | 98 | 96 | 82 | 70 | 74 | 46 | 39 | 24 | 41 | 48 | 36 | 36 | 22 | |
2550 | 2400 | 2700 | 2650 | 1500 | 1350 | 1250 | 1050 | 1300 | 1350 | 1400 | 1750 | 1750 | 1700 | 2050 | 2200 | |
 | — | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:13 | — | — |
 | — | — | 6:20 | — | — | 6:21 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — |
Heavy rain (total 22.0mm), heaviest during Wed afternoon. Mild temperatures (max 8°C on Wed night, min 1°C on Thu night). Winds increasing (calm on Tue night, fresh winds from the SW by Wed afternoon).
Mostly dry. Freeze-thaw conditions (max 12°C on Sun morning, min 0°C on Fri night). Wind will be generally light.
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 13 Mar 2026 |
| Snow Alerts | Create Alert |
0.0 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.1 | Powder days Fresh snow, limited sun, any wind. |
0.3 | Bluebird days Average snow, mostly sunny, light wind. |
The above table gives the weather forecast for Osa at the specific elevation of 700 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Osa. To access the weather forecasts for the other elevations, use the tab navigation above the table. For a wider view of the weather, check out the Weather Map of Japan.
Click here to read further information on freezing levels and how we forecast our temperatures.
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